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arXiv 2311.13640hep-phastro-ph.COgr-qchep-th
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来自共形Higgs的原初黑洞

Primordial Black Holes from Conformal Higgs

Yann Gouttenoire

备注：
Check of validity of beta-parameterisation of the tunnelling rate, discussions and Refs added. Software program to calculate bounce action and nucleation temperature available on github (https://github.com/YannGou/CCBounce.git). Matches version published in PLB
发表信息：
Phys.Lett.B 855 (2024) 138800
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AI总结：

本文研究标准模型的最小无标度 $U(1)_{\rm D}$ 扩展，发现其过冷一阶相变可大量产生原初黑洞（PBHs），质量受 QCD 催化限制上限为月球质量，能解释 HSC 透镜异常、全部暗物质及 511 keV 谱线，并分析了引力波信号的探测性与信号稀释效应。

摘要：

电弱理论的无标度扩展不仅因其能动力学地产生弱标度而具有吸引力，还因其在促进过冷一阶相变中发挥作用。我们研究了标准模型的最小无标度 $U(1)_{\rm D}$ 扩展，并表明可以大量产生原初黑洞（PBHs）。由于 QCD 催化限制了过冷量，这些 PBHs 的质量上限为月球质量。对于暗 Higgs vev $v_ϕ\simeq 20~\rm TeV$ 产生的月球质量 PBHs，对应于解释 HSC 透镜异常的最佳似然度。对于 $v_ϕ\gtrsim 400~\rm TeV$，该模型能解释百分之百的暗物质。在更大的标度层级下，它可对 $511~\rm keV$ 谱线做出贡献。虽然由 HSC 异常解释产生的引力波（GW）信号很大且能被 LISA 在天体物理前景之上探测到，但基于 PBHs 的暗物质解释无法完全被未来 GW 探测所探测。这是由于在长寿命 $U(1)_{\rm D}$ 标量衰变期间注入的熵对信号产生了稀释。这种延长的寿命是标度层级巨大的自然结果。

英文摘要：

Scale-invariant extensions of the electroweak theory are not only attractive because they can dynamically generate the weak scale, but also due to their role in facilitating supercooled first-order phase transitions. We study the minimal scale-invariant $U(1)_{\rm D}$ extension of the standard model and show that Primordial Black Holes (PBHs) can be abundantly produced. The mass of these PBHs is bounded from above by that of the moon due to QCD catalysis limiting the amount of supercooling. Lunar-mass PBHs, which are produced for dark Higgs vev $v_ϕ\simeq 20~\rm TeV$, correspond to the best likelihood to explain the HSC lensing anomaly. For $v_ϕ\gtrsim 400~\rm TeV$, the model can explain hundred per cent of dark matter. At even larger hierarchy of scales, it can contribute to the $511~\rm keV$ line. While the gravitational wave (GW) signal produced by the HSC anomaly interpretation is large and detectable by LISA above astrophysical foreground, the dark matter interpretation in terms of PBHs can not be entirely probed by future GW detection. This is due to the dilution of the signal by the entropy injected during the decay of the long-lived $U(1)_{\rm D}$ scalar. This extended lifetime is a natural consequence of the large hierarchy of scales.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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